Mandibular protrusion device ? users AHI, sleep efficiency, REM sleep and oxigenation

Purpose: to evaluate some polysomnographic parameters of patients that were referred to use mandibular protusion device (MPD).Methods: we studied, retrospectively, data from medical records with items that made up polysomnography of 124 patients aged between 25-77 years, that were not having any treatment for OSAHS. The study was approved by the Ethics Committee of origin institution (CAE number 0378.0.133.000-10).Results: 46.8% of respondents had mild apnea, snoring and most had poor sleep efficiency. Almost all of these patients had OSAHS. The lower oxygen saturation during the test ranged from 60% to 97%, with more than four fifths of the sample rates below 90%.Conclusion: there was no significant relationship between rates of apnea and the levels of oxyhemoglobin saturation. Sleep efficiency was directly related to the severity of OSA, with statistical evidence; oximetry can be a valuable tool for the diagnosis of OSA, but cannot be sole source to refer to the severity of the syndrome, REM sleep was poor in most investigated, and this was significantly related to sleep efficiency.